55111155556 has 12 divisors (see below), whose sum is σ = 97665339520. Its totient is φ = 27206772840.

The previous prime is 55111155521. The next prime is 55111155569. The reversal of 55111155556 is 65555111155.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87200880 + ... + 87201511.

Almost surely, 2^55111155556 is an apocalyptic number.

It is an amenable number.

55111155556 is a deficient number, since it is larger than the sum of its proper divisors (42554183964).

55111155556 is a wasteful number, since it uses less digits than its factorization.

55111155556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174402474 (or 174402472 counting only the distinct ones).

The product of its digits is 93750, while the sum is 40.

The spelling of 55111155556 in words is "fifty-five billion, one hundred eleven million, one hundred fifty-five thousand, five hundred fifty-six".